#144 Doesn't send mail

[Anonymous]

Name: Matteo Spada
Email: matteo.spada2@virgilio.it

Hi, it seems phpopenchat installet correctly, only when a user register itself, he doesn't receive the register mail. I've checked php.ini in /etc (i use linux) and is OK.
I tried to put:
define('SEND_CONFIRMATION_MAIL', true);
false... but if i write false instead of true... then I can't register because it say that can't send mail...
What should I do?

Thank's in advance for your help... and for your GREATE PHP Chat....